The SunRace MX8 cassette is an 11-speed cassette compatible with Shimano and SRAM bodies. It has a wide range of 11-42 teeth, ensuring you always have the right cog, whether you're going uphill or downhill. Made of high-quality steel, it weighs 401 grams. Its black color, red spider, and lockring give it a stylish look. Product specifications: - Brand: SunRace - Model: CSMX8 - Number of gears: 11 - Gear ratio: 11-42T (11-13-15-17-19--21-24-28-32-36-42) - Color: black with red spider and lockring - Material sprocket 1-10: Hi-Tensile Steel - Material sprocket 11: A7075 Aluminum / Anodized - Weight: 401 grams Note: This cassette is compatible with Shimano MTB HG / SRAM no-XD freewheels and Shimano / SRAM 11-speed gears.